Journal
ENTROPY
Volume 19, Issue 3, Pages -Publisher
MDPI AG
DOI: 10.3390/e19030110
Keywords
tilted spacetimes; irreversibility; dissipative procceses
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Funding
- Spanish Ministerio de Ciencia e Innovacion [FIS2015-65140-P]
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It is well known that, in the context of General Relativity, some spacetimes, when described by a congruence of comoving observers, may consist of a distribution of a perfect (non-dissipative) fluid, whereas the same spacetime as seen by a tilted (Lorentz-boosted) congruence of observers may exhibit the presence of dissipative processes. As we shall see, the appearance of entropy-producing processes are related to the high dependence of entropy on the specific congruence of observers. This fact is well illustrated by the Gibbs paradox. The appearance of such dissipative processes, as required by the Landauer principle, are necessary in order to erase the different amount of information stored by comoving observers, with respect to tilted ones.
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